Dimensions: Book 1 (Salmon) is 8.75 x 6 x 1.5 inches and Book 2 (Bottom Sea) is 7 x 5 x 1 inches.
Special because: Book 1 is dated 1936 and Book 2 is dated 1870. Book 2 features a cursive, handwritten note which I believe says "Velma E. Baron Presented Jan. 1887 by H.S. Garrison" and Book 1 features a stamp that says "The Times Book Club, 42 Wigmore Street W1 [London]." The Times Book Club was a set of reading rooms in central London where subscribers could borrow, read, and purchase books.
Picture it: stacked on a shelf for a vintage touch of color but don't forget a decorative object on top.
FYI: Both books are in good vintage condition. All pages are intact and there is an expected amount of discoloration for books of their age.